This tutorial is for Ubuntu 16.04 LTS, but can be adapted for other distros.
This guide will walk you through the process of compiling and installing NuttX on the Bambino 200E board.
First, install the necessary packages:
sudo apt-get install automake bison build-essential flex gperf git libncurses5-dev libtool libusb-dev libusb-1.0.0-dev
Create a workspace directory:
mkdir -p ~/nuttxspace
cd ~/nuttxspace
Install the ARM GCC Toolchain, ensuring a version >= gcc version 6.3.1 20170620.
sudo apt-get install gcc-arm-none-eabi
Clone the NuttX repositories:
git clone https://bitbucket.org/nuttx/nuttx
git clone https://bitbucket.org/nuttx/apps
git clone https://bitbucket.org/nuttx/tools
Compile kconfig in tools/kconfig-frontends/:
cd tools/kconfig-frontends/
./bootstrap
./configure
make
sudo make install
This installs kconfig in /usr/local/bin.
Compile NuttX for the Bambino board:
cd ~/nuttxspace/nuttx/tools
./configure.sh bambino-200e/nsh
cd ..
make
This creates nuttx.bin to be flashed onto the Bambino board.
Several methods are available for flashing the board.
Choose the method that matches your available hardware.
Connect the ST-Link v2 to the J5 connector on the board and use:
sudo openocd -f interface/stlink-v2.cfg -f target/lpc4350.cfg -c init -c "reset halt" -c "flash write_image erase nuttx.bin 0x14000000"
Use a USB/Serial board connected to Slot 5 and a terminal like “minicom” set to 115200 8n1 to access the NuttX prompt.
Edit jlink.cfg to use SWD:
sudo vi /usr/local/share/openocd/scripts/interface/jlink.cfg
Add:
transport select swd
Then flash with:
sudo openocd -f interface/jlink.cfg -f target/lpc4350.cfg -c init -c "reset halt" -c "flash write_image erase nuttx.bin 0x14000000"
Or:
sudo openocd -f interface/jlink.cfg -f board/lpc4350_spifi_generic.cfg -c init -c "reset halt" -c "flash write_image erase nuttx.bin 0x14000000"
Install lpc21isp:
sudo apt-get install lpc21isp
Produce a .hex file:
make menuconfig
Select Intel HEX binary format, save, and exit. Then:
make
Flash the firmware:
lpc21isp nuttx.hex /dev/ttyUSB0 115200 12000
Change /dev/ttyUSB0 to match your device.
Install SEGGER’s Software & documentation pack from their website.
Start the debug server and GDB:
JLinkGDBServer -device LPC4330_M4 -endian little -if JTAG -speed 10000 -localhostonly
arm-none-eabi-gdb -ex "set target-charset ASCII" -ex "set print pretty on" -ex "target remote :2331" -ex "set mem inaccessible-by-default off" nuttx
Upload code with GDB:
Ctrl+C
load
monitor reset
continue
Follow the User Guide from NXP, particularly sections 3.2 and 3.3. Install LPCScrypt from their website.
Enter bootloader mode:
Flash firmware with LPCScrypt:
./scripts/boot_lpcscrypt
./bin/lpcscrypt program +c /path/to/nuttx/nuttx.bin BankA
./bin/lpcscrypt resetCore
Or:
sleep 1
./bin/lpcscrypt -d /dev/ttyACM0 program +c LPC4330_M4/Smoothie2.bin SPIFI
sleep 1
./bin/lpcscrypt -d /dev/ttyACM0 resetCore
After flashing nuttx.bin, connect a USB/Serial board to Slot 5 and use “minicom” at 115200 8n1. Press “RESET” and you should see:
NuttShell (NSH)
nsh>
Type “help” or “?” for commands.
Compile with:
cd ~/nuttxspace/nuttx/tools
./configure.sh bambino-200e/netnsh
cd ..
make
Flash nuttx.bin, connect to your router, and use telnet with the IP assigned to the board.
Compile with:
cd ~/nuttxspace/nuttx/tools
./configure.sh bambino-200e/usbnsh
cd ..
make
Flash nuttx.bin, connect USB0 to your PC, reset the board, and use “minicom” with /dev/ttyACM0 at 115200 8N1.
TODO